Every day people order the top 5 songs and nominate one another song and a new topic. That way, we always have songs on the same topic. When there are more than 5 songs nominated on the same topic - people filter them out with one extra step.

It's fun, and it's been running since Nov 2022 https://urbanpoll.com/dj/rounds. I'd be happy if more people joined. I'm the "founder" of this little side project.